qa_spec/
visibility.rs

1use serde_json::{Map, Value};
2
3use crate::spec::form::FormSpec;
4
5pub type VisibilityMap = std::collections::BTreeMap<String, bool>;
6
7#[derive(Debug, Clone, Copy, PartialEq, Eq)]
8pub enum VisibilityMode {
9    Visible,
10    Hidden,
11    Error,
12}
13
14pub fn resolve_visibility(spec: &FormSpec, answers: &Value, mode: VisibilityMode) -> VisibilityMap {
15    let mut map = VisibilityMap::new();
16    let mut ctx_map = Map::new();
17    ctx_map.insert("answers".into(), answers.clone());
18    let ctx = Value::Object(ctx_map);
19
20    for question in &spec.questions {
21        let visible = if let Some(expr) = &question.visible_if {
22            match expr.evaluate(&ctx) {
23                Some(val) => val,
24                None => match mode {
25                    VisibilityMode::Visible => true,
26                    VisibilityMode::Hidden => false,
27                    VisibilityMode::Error => true,
28                },
29            }
30        } else {
31            true
32        };
33        map.insert(question.id.clone(), visible);
34    }
35
36    map
37}
qa_spec/visibility.rs

qa_spec/
visibility.rs
